Born on May 14, 1984, in White Plains, New York, Mark Zuckerberg co-founded the social-networking website Facebook out of his college dorm room. He left Harvard after his sophomore year to concentrate on the site, the user base of which has grown to more than 2 billion people, making Zuckerberg a billionaire many times over. The birth of Facebook was portrayed in the 2010 film The Social Network.
